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Satellite remote sensing of thermal activity at Bezymianny and Kliuchevskoi from 1993 to 1998

van Manen, Saskia M. and Dehn, Jon (2009). Satellite remote sensing of thermal activity at Bezymianny and Kliuchevskoi from 1993 to 1998. Geology, 37(11) pp. 983–986.

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Time-series trends in thermal Advanced Very High Resolution Radiometer (AVHRR) data from 1993 to 1998 provide insight into the active volcanic processes at Bezymianny and Kliuchevskoi, two of the most dangerous volcanoes on the Kamchatka Peninsula. The AVHRR time series show differences in these volcanoes' pre- and postexplosive trends: Bezymianny exhibited a thermal precursory signal in all recorded explosions between 1993 and 1998, as well as continued postexplosive activity, and Kliuchevskoi showed only short-lived thermal activity and exhibited precursors before the 1994 paroxysmal explosion. These contrasting characteristics reflect different magma types and eruption styles. At Bezymianny, a persistent thermal signal and precursory thermal increases are due to the slow ascent of andesitic magma, whereas the more rapid rise, effusion, and cooling of basaltic magmas at Kliuchevskoi give rise to a discontinuous thermal pattern. Documentation, analysis, and understanding of these characteristics contribute to the understanding of thermal signals and aid the development of monitoring algorithms and early warning techniques.

Item Type: Journal Article
Copyright Holders: 2009 Geological Society of America
ISSN: 0091-7613
Academic Unit/Department: Science > Environment, Earth and Ecosystems
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
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Item ID: 30683
Depositing User: Saskia van Manen
Date Deposited: 05 Jan 2012 10:37
Last Modified: 18 Jan 2016 11:43
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